Re: Alternative to using USB-Stick as mass storage on NSLU2
Doesn't look like these are sold anymore, but I bought one 4 years ago
because when I first read about issues with flash memory and the
NSLU2s, I knew I needed a rotating magnetic disk, and this was the
smallest USB one money cold buy:
http://www.amazon.com/Western-Digital-WDXMM60WPN-Passport-Portable/dp/tech-data/B000E22DAY/ref=de_a_smtd
- jake
2010/2/18 Rick Thomas <rbthomas@pobox.com>:
>
> On Feb 18, 2010, at 12:55 PM, Björn Wetterbom wrote:
>
>> I've used a Freecom 2.5" drive for a couple of years with good
>> results. USB powered of course.
>>
>> I've also used an external WD 3.5" drive which I am very pleased with,
>> and since WD offers a wide variety of 2.5" drives at good prices I
>> would go for one of those.
>>
>> /Björn
>>
>>
>>
>> On Thu, Feb 18, 2010 at 18:02, <u7l11ey@mail.lrz-muenchen.de> wrote:
>>>
>>> John Holland wrote
>>>
>>>> You could use a 2.5" HDD. The Momentus has a typical usage specified @
>>>> 1.5W seek and .7W idle.
>>>
>>> Thanks for pointing out the low energy consumption of modern 2.5" HDs.
>>> Since others mentioned that SD is even less suitable for my purpose, I
>>> think I'll go that route.
>>>
>>> Can anybody recommend a specific model of an external 2.5" drive that
>>> works well with a slug under Debian (Lenny armel), preferably USB-powered
>>> so I don't need an extra power supply?
>>>
>>> I've read a lot on nslu2-linux.org about spindown issues with HDs
>>> connected to a slug. Since my slug is logging data continuously 24/7, I
>>> guess I shouldn't let the HD spin down at all. Is that assumption
>>> correct?
>>>
>>> Regards, Richard
>
> Sounds like a fun project! Please keep us informed on what you wind up
> doing.
>
> If whatever you use works OK with only USB power, that's great. But I'd
> make sure that any external hard-drive at least has the *option* of external
> power, incase it turns out that the Slug can't provide enough to, e.g.
> spin-up at boot time.
>
> Of course, external power will probably mean more total power drain (due to
> losses in the transformer, etc...) There are trade-offs in all things.
>
> Another low-power option would be to use a larger USB-stick (e.g. 8GB) which
> will allow the writes to be spread over more memory cells, increasing the
> total life of the stick.
>
> And yet a third idea: You can rent a few gigabytes of storage "in the cloud"
> from places like Amazon.com. Then you could use the cloud-storage as an
> energy efficient backup for your log files.
>
> Whatever you do, frequent backups are always a good idea.
>
> Enjoy!
>
> Rick
>
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